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Avoiding Heat Loss

Our bodies lose heat in five ways.

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Keeping Your Head Warm

There is widespread misconception regarding heat loss through one’s head. You have probably heard one or more of these myths:

If your feet are cold, cover your head. You can lose up to 75% of your body heat through your head alone.

Although 13-16% of the blood volume is in the head at any given [...]

Winter Camping Myth: If your feet are cold, cover your head because you can lose up to 75% of your body heat through your head alone.

The problem is that the head is only about 10% of the body surface area. Thus, the head would have to lose about 40 times as much heat per square inch or centimeter compared to the rest of the body.

Gordon Giesbrecht, PhD working at the Laboratory of Exercise and Environmental Medicine at the University [...]

The Claim: You Lose Most of Your Body Heat Through Your Head

As reported in the Sunday PARADE magazine, this old saw comes from experiments done in the 1950s in which soldiers were sent into subzero temps wearing survival suits—and no hats. Shockingly, they lost a lot of heat through their heads!

Dr. Daniel I. Sessler, an anesthesiologist and expert on hypothermia at the University of Louisville [...]

The Truth About Heat Loss Through Your Head

There is widespread misconception regarding heat loss through one’s head. You have probably heard one or more of these myths:

If your feet are cold, cover your head. You can lose up to 75% of your body heat through your head alone.

Although 13-16% of the blood volume is in the head at any given [...]